227199206909 has 2 divisors, whose sum is σ = 227199206910. Its totient is φ = 227199206908.

The previous prime is 227199206887. The next prime is 227199206933. The reversal of 227199206909 is 909602991722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122375431684 + 104823775225 = 349822^2 + 323765^2 .

It is a cyclic number.

It is not a de Polignac number, because 227199206909 - 2⁸ = 227199206653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (227199206939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113599603454 + 113599603455.

It is an arithmetic number, because the mean of its divisors is an integer number (113599603455).

Almost surely, 2^227199206909 is an apocalyptic number.

It is an amenable number.

227199206909 is a deficient number, since it is larger than the sum of its proper divisors (1).

227199206909 is an equidigital number, since it uses as much as digits as its factorization.

227199206909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2204496, while the sum is 56.

The spelling of 227199206909 in words is "two hundred twenty-seven billion, one hundred ninety-nine million, two hundred six thousand, nine hundred nine".